Gas cleaner



H. c. RYDING GAS CLEANER Filed Jan. 25. 1922 2 Sheets-Sheet 1 INVE/VTUR Herber/ C Kyd/hg BY M.

A Tomi/Er Jan. 0, 1925- 1,523,611 H. c. RYDING I GAS CLEANER Filed Jan; 25, 1922 2 Sheets-Sheet 2 Herbrf C. Ryd/ng BY w ATTORNEY Patented Jan. 28, 1925..

ihg dfilll ATENT HERBERT RYDING, OF BIRMINGHAM, ALABAMA.

GAS CLEANER.

Application filed January 25, 1922.

To all 1177mm 'onay concern:

Be it known that I, HERBERT C. RYDING, a citizen of the United States, and resident of Birmingham, Alabama, have invented certain new and useful Improvements in Gas Cleaners, of which the following is a specification.

This invention relates to improved means for removing dust particles of iron lime and coke which are held in suspension inblast furnace gases.

The invention consists broadly in the provision of means for centrifugally separating the dust particles from the gas'and means for carrying off the cleaned gas. One embodiment of the invention is illustrated in the accompanying drawings in which Fig. 1 is an elevation partly in vertical section;

Figs. 2, 3 and 4 are horizontal sections on the correspondingly numbered lines of Fig. 1.

Referring to the drawings, a plurality of columns 2 support a platform 4.made up of suitable structural shapes which carry a number of brackets 6 which in turn are secured to the bottom end of a shell 8. This hollow shell forms a gas cleaning chamber 10 of great height. Secured to the top of the shell is a roof or dome 12 provided with an upwardly extending pipe 14 of considerably smaller diameter than that of the shell 8. A pipe 16 is in open communication at 18 with the pipe 14 and is connected therewith in such manner that the gas enters the pipe l4 tangentially. Secured to the lower end of the. shell 8 is a tapered hopper 20 adapted to receive the greater portion of the dust which is separated from the gas in a manner to be hereafter described. Extending longitudinally for practically the full length of the shell are a series of radial ribs 22 which are adapted to prevent the whirling motionof the dust laden gas as it passes through the chamber 10. Intersecting the ribs 22 is a series of annular vanes 24 arranged one above the other and of such diameter that their outer lower edges 26 are spaced away from the inner surface of the shell leaving small spaces 28 through which the dust particles travel and fall into the hopper 20 at the lower end of the shell. The upper edges 30 of the vanes project inwardly to approximately the same extent as the radial ribs 22.

Serial No. 531,793,

At the lower end of the shell is formed a substantially cylindrical wall 38 to the bottom of which is secured a tapered hopper 34 adapted to receive a comparatively small quantity of dust particles from the gas which travels in the inner zone of the cleaner. The hoppers 34 and 20 are provided respectively with bell valves 36 and 38 which are connected with each other by a rod 40 and held normally in closed position by a counterweighted lever 41 which is pivoted at 42 to a bracket 44 carried by the hopper 20. When a"sutficient quantity of dust accumulates in either of the hoppers the weight thereof overbalances the lever 40 and automatically discharges the contents in the usual manner.

Surrounding a lower portion of the shellv 8 is a bustle chamber 46. This chamber is constructed of sheet metal plates and is pro- Vided with a number of laterally extending conduits 48 which are adapted to convey the clean gas outwardlyand discharge it through the outlet main 50. The bustle chamber is provided with a man hole 52 covered .by a suitable plate 54 to permit workmen to enter the same tomake repairs or inspect the interior of the shell. The dome 12 and the hopper 20 are provided with similar man holes 56 and 58 which are closed by suitable plates as shown.

Extending through the center of the chamber 10 is a rotor which is provided with fan blades adapted to impart a whirling motion to the gas within said chamber so as to throw the dust particles outwardly by cen trifugal force. This rotor comprises an axial shaft (31) supported at the top in a bearing 62 and at the bottom in a bearing 64 which bearing is carried by suitable supports 66 extending laterally through the shell. The bearing 62 is mounted on the top cover plate 68 which is secured to a rim carried by the pipe 14. The shaft is driven by a motor 70 which is connected by spur gears 72, shaft 74 and beveled gearing 76. Near the upper end of the, chamber 10 the shaft carries fan blades 78 of the formation shown in Fig. 2, and oclow these are a series of other fan blades 80 which are carried by. radial arms 82, Fig. 3. Below the fan blades/T8 is a fixed central conical diaphragm 79 which is carried by suitable angle bars 81 secured to the shell in a suitable manner;

' abl control valve 96. By opening the valve 96 the interior of the chamber can beflushed down to clean the interior of the shell and the vanes 24 whenever foundnecessary or desirable.

Inoperation, dirty gas enters the pipe 16 and due to the tangential connection of the pipes 16 and 14: the gas is given a slight rotary or whirling motion and as it leaves the pipe 14 the fan blades. 7 8 tend to accelerate this whirling motion thus throwing the heavier dust'particles outwardly and cansing them to be trapped by the inclined vanes 24:. The particles fall down the inclined surfaceof thevanes and through the annular spaces 28 until they reach the dust hopper 20 at the lower end of the shell. The radial ribs 22 serve to prevent the whirling motion of the dust laden gas in the outer zone of the cleaning chamber 10. As the gas leaves the pipe 14 it is prevented from flowing straight down through the chamber by the conical'bafile or diaphragm 79. As the gas flows between the outer edge of the dia phragm 7 9 and the inner surface of the shell it is acted upon by the several fan blades 80 which continue to force the heavier dust particles outwardly and on to the inclined vanes 24. In this manner it will be seen that the gas in the inner or central zone of the means for the collection and removal of the dust from the cleaner, I mean essentially some type of hopper, it not being essential to provide means in the chamber such asthe .ribs 22, and vanes 24.

Though I have described with great particularity the details of the embodiment cleaner to cause the dust collect and travel downwardly in an outer zone in said chamber and the clean gas to travel downwardly in aninner zone in said chamber, a series of parallel inclined annular vanes adapted to trap and influence the direction of travel of the separated dust, and means for the collection and removal of the dust from said chamber. f

2. A gas cleaner for removing iron, coke, lime particles and the like from the blast furnace gas comprising a shell forming an elongated cleaning chamber having an inlet for the dirty gas at one end and an outlet for .the cleaned gas at the other end, and propelling means acting on the gas during its passag through said chamber to impart centrifugal rotation thereto, a series of frusto-conical vanes all inclined in the same direct-ion for trapping and successively discharging thecentrifugally separated dust, and means for the removal of the dust from said chamber.

3. A blast furnace gas cleaner comprising a shell forming-an elongated cleaning chamber having gas inlet and outlet ports at opposite ends, a rotor having a series of vertically spaced impellers acting on the gas substantially throughout its traverse through said chamber to impart centrifugal motion thereto, a series of outwardly. and downwardly inclined vanes adapted to trap the dust and direct it .forcibly down along the surface of said shell, and means to separate the centrifugally collected dust from the cleaned gas. I

4. A gas cleaner comprising a vertical shell forming an elongated cleaning chamber having an upper tangential inlet port for the dirty gas and a bottom outlet chamber for the cleaned gas, a rotor disposed axially of the chamber and having a plurality of impellers arranged-to act successively on the gas as it flows downwardly through said chamber to maintain its centrifugal motion, a series of annularvanes similarly inclined one over the other to trap the centrifugally separated dust, and means for the collection and removal of the dust from said chamber.

5.- A gas cleaner comprising a shell form ing a cleaning chamber, means for causing the dust to travel downwardly in an outer zone in said chamber and the clean gas to travel downwardly in an inner zone in said chamber, a bustle chamber surrounding'the lower end of said shell and having a cleangas outlet and conduits connecting said bustle chamber with the inner zone of the I gas cleaning chamber.

6. A gas cleaner including a shell forming a. cleaning chamber, a rotor within said chamber adapted to drive the dust particles outwardly and similarly inclined parallel annular vanes arranged one above the other to trap said dust particles and direct them downwardly and conduits 'communicatmg with the lowercentral portion of the cleaning chamber and leading to a clean gas outlet.

7. A gas cleaner including a shell forming a cleaning chamber a rotor within said chamber adapted to drive the dust particles outwardly, a series of longitudinal vanes,

the outer edges of said annular vanes being spaced away from the inner surface of said shell to permit the trapped dust to travel downwardly, and a hopper below said vanes arranged to receive the dust discharged therefrom, a bustle chamber having a gas outlet and conduits connecting said bustle chamber with said gas cleaning chamber.

8. A gas chamber comprising a shell forming a cleaning chamber, an inlet for dirty gas connected to the top of said shell, a rotor carrying fan blades adapted to propel the gas through the cleaning chamber and to centrifugally throw the dust particles to an outer zone in said chamber, a series of inclined annular vanes arranged to trap the dust particles and direct them downwardly, a lower dust hopper and a lower clean gas chamber vhaving a gas outlet a-ndconduits opening into the central lzgne of the lower end of the cleaning cham- 9. A gas cleaner comprising a shell forming a cleaning chamber, a series of longitudinally extending vanes secured to said shell and projecting into the cleaning chamber and adapted to prevent the whirling motion of the dust laden gas in the outer zone of said chamber, a dust hopper at the lower end of said shell,'-a series of frustoconical vanes whose lower outer edges terminate a short distance from the inner surface of said shell so as to permit the dust particles to travel downwardly into said dust hopper and whose upper edges project inwardly, a rotor within the cleaning chamber having fan blades adapted to centrifugally throw the dust particles outwardly onto said frusto-conical vanes, a bustle chamber surrounding the lower end of said shell, said bustle chamber having a clean gas outlet and being connected with the central zone of the interior of said gas cleaning chamber by lateral conduits.

In witness whereof, I have hereunto signed my name.

HERBERT O. RYDING. 

